arch/powerpc/platforms/pseries/cc_platform.c

Source file repositories/reference/linux-study-clean/arch/powerpc/platforms/pseries/cc_platform.c

File Facts

System
Linux kernel
Corpus path
arch/powerpc/platforms/pseries/cc_platform.c
Extension
.c
Size
496 bytes
Lines
27
Domain
Architecture Layer
Bucket
arch/powerpc
Inferred role
Architecture Layer: exported/initcall integration point
Status
integration implementation candidate

Why This File Exists

CPU and platform-specific kernel glue: boot entry, traps, syscall entry, interrupts, page tables, context switch, and low-level barriers.

Dependency Surface

Detected Declarations

Annotated Snippet

// SPDX-License-Identifier: GPL-2.0-only
/*
 * Confidential Computing Platform Capability checks
 *
 * Copyright (C) 2021 Advanced Micro Devices, Inc.
 *
 * Author: Tom Lendacky <thomas.lendacky@amd.com>
 */

#include <linux/export.h>
#include <linux/cc_platform.h>

#include <asm/machdep.h>
#include <asm/svm.h>

bool cc_platform_has(enum cc_attr attr)
{
	switch (attr) {
	case CC_ATTR_MEM_ENCRYPT:
		return is_secure_guest();

	default:
		return false;
	}
}
EXPORT_SYMBOL_GPL(cc_platform_has);

Annotation

Implementation Notes